How to Install CTs for EIG Meters

Installing CTs correctly is critical to receive good data from your EIG Meter. Here are the three main things you must know:

  1. One side of the CT is the high side, which needs to face the source of the energy
  2. White wires (terminals) connect to the high inputs on the side of the meter and the black wires connect to the low inputs
  3. You can’t cross the voltage in the CT inputs

You need a current through the CTs in order to get an accurate reading. You can’t validate the installation until you have at least 5% of the rated capacity.

For complete information on CT installation, please watch our video below. Forrest Whitt, Senior Application Engineer, will walk you through the details.

You can find a PDF version of the wiring diagram on our website under Downloads. Please contact our dedicated team at any time with questions regarding your power meter. You can also join us for one of our upcoming free training sessions throughout the US.


September 25, 2018

Quality is our Most Important Company Goal

Electro Industries believes that quality is our MOST IMPORTANT company goal. To achieve that goal, we provide a multipoint approach to quality. EIG uses advanced standards, from the purchasing of components to the final shipping of products, to insure that our instruments are free from defects when shipped and operate for many years in service. We provide factory tours and have been know to impress people quite often.

In-Process Environmental Testing and 100% Inspection

EIG meters utilize brand-name, industrial temperature components. They receive 100% component insertion inspection, automated computer controlled testing, temperature deviation-based accelerated life burn-in testing and extensive 2.5 KV dielectric testing. We strive to achieve low failure rates by using comprehensive quality-based design and manufacturing techniques. We test extensively so that users can be confident that when they receive and EIG meter, it is one of the best in the industry.

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